/**
 * author: hy
 * decs:
 * time: 2017/12/17
 */
* {
    margin: 0;
    padding: 0;
}
@media screen and (min-width: 1900px){
    .content{
        width: 70%;
        margin: 0 15%;
    }
}
@media (max-width: 1900px) and (min-width: 1200px){
    .content{
        width: 80%;
        margin: 0 10%;
    }
}
@media screen and (max-width: 1200px){
    .content{
        width: 90%;
        margin: 0 5%;
    }
}
.content> div{
    margin-top: 50px;
}
ul{
    float: left;
    width: 60%;
    border-top: solid 1px rgba(255,255,255, .1);
    list-style: none;
}
ul > li{
    padding: 8px;
    font-family: "微软雅黑",sans-serif;
    font-size: 16px;
    line-height: 22px;
    color: rgba(255,255,255, .6);
    border-bottom: solid 1px rgba(255,255,255, .1);
}
ul > li:hover{
    background-color: rgba(85,103,126,.3);
    color: rgba(255,255,255,.9);
    cursor: pointer;
}

.btn{
    position: fixed;
    bottom: -1px;
    margin: 0 auto;
    overflow: hidden;
    width: 100%;
    height: 90px;
}
.btn> i{
    margin: 20px 10px;
    color: white;
    height: 40px;
    cursor: pointer;
}
.btn span{
    color: white;
}
#playBtn, #pauseBtn{
    position: relative;
    bottom: -5px;
}
/** 信息展示 **/
header{
    float: left;
    height: 100px;
    width: 30%;
    margin-left: 10%;
}
header img{
    height: auto;
    width: 200px;
}
header div{
    padding: 5px;
    color: white;
}
/** 信息展示 end **/
/** 进度条 **/
.progress_bar{
    width: 45%;
    display: inline-block;
}
.total_bar{
    display: inline-block;
    position: relative;
    top: -5px;
    width: 100%;
    height: 2px;
    background-color: rgba(255,255,255,.2);
}
.current_bar{
    position: relative;
    top: -11px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: rgba(255,255,255,.7);
}
/** 进度条 end **/
/**  音量条 **/
.volume_bar{
    width: 5%;
    display: inline-block;
}
.volume_total_bar{
    display: inline-block;
    position: relative;
    top: 15px;
    width: 100%;
    height: 2px;
    background-color: rgba(255,255,255,.2);
}
.volume_current_bar{
    position: relative;
    top: 9px;
    left: 0;
    width: 100%;
    height: 2px;
    color: rgba(255,255,255,.9);
    background-color: rgba(255,255,255,.7);
}
.volume_current_bar> i{
    position: relative;
    top: -10px;
    left: 100%;
    cursor: pointer;
}
.menu_manager > div{
    display: inline-block;
    padding: 5px 30px;
    border: solid 1px rgba(255,255,255,.5);
    border-radius: 3px;
    color: rgba(255,255,255,.5);
    font-size: 16px;
    line-height: 26px;
    cursor: pointer;
}
.menu_manager > div:hover{
    color: rgba(255,255,255,.9);
}
.hide{
    display: none;
}
.mag_right_30{
    margin: 20px 20px!important;
}
.bg_rbga_7{
    background-color: rgba(85,103,126,.7);
}
.bg_rbga_9{
    background-color: rgba(85,103,126,.9);
}